3-Coil 480V Motor Starting Autotransformer
Size Guide SKU # MIT-MSA-100Delivers in 3-5 business days
kVA (kilo-volt-amperes) is the main power rating used for "sizing" transformers. You can calculate your kVA per the formulas below, or simply use the table below to find your kVA.
3-phase kVA calc: voltage X amperage X 1.732 / 1,000
1-phase kVA calc: voltage X amperage / 1,000
| 15 kVA | 30 kVA | 45 kVA | 75 kVA | 112.5 kVA | 150 kVA | 225 kVA | 300 kVA | 500 kVA | 750 kVA | 1000 kVA | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 208V | 42A | 83A | 125A | 208A | 312A | 416A | 625A | 833A | 1388A | 2082A | 2776A |
| 240V | 36A | 72A | 108A | 180A | 271A | 361A | 541A | 722A | 1203A | 1804A | 2406A |
| 380V | 23A | 46A | 68A | 114A | 171A | 228A | 342A | 456A | 760A | 1140A | 1519A |
| 400V | 22A | 43A | 65A | 108A | 162A | 217A | 325A | 433A | 722A | 1083A | 1443A |
| 416V | 21A | 42A | 62A | 104A | 156A | 208A | 312A | 416A | 694A | 1041A | 1388A |
| 480V | 18A | 36A | 54A | 90A | 135A | 180A | 271A | 361A | 601A | 902A | 1203A |
| 600V | 14A | 29A | 43A | 72A | 108A | 144A | 217A | 289A | 481A | 722A | 962A |
V = volts, A = amps
| 10 kVA | 15 kVA | 25 kVA | 37.5 kVA | 50 kVA | 75 kVA | 100 kVA | 167 kVA | 250 kVA | 333 kVA | |
|---|---|---|---|---|---|---|---|---|---|---|
| 120V | 83A | 125A | 208A | 313A | 417A | 625A | 833A | 1392A | 2083A | 2775A |
| 240V | 42A | 63A | 104A | 156A | 208A | 313A | 417A | 696A | 1042A | 1388A |
| 277V | 36A | 54A | 90A | 1354A | 181A | 271A | 361A | 603A | 903A | 1202A |
| 480V | 21A | 31A | 52A | 784A | 104A | 156A | 208A | 348A | 521A | 694A |
V = volts, A = amps
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400 HP and below kept IN STOCK, call to check availability over 400 HP
Standard Features:
- Duty: Medium Duty
- Phase: 3
- Coils: 3 Coils
- Taps: 50%, 65%, 80%, 100%
- Frequency: 60Hz
- Material: Copper
- Insulation Class: 220°C
- Approval: CSA, UL
Need something different? Contact us for a custom quote: websales@maddoxtransformer.com
Shipping Rates
Shipping rates vary, but generally range between 5-10% of the total purchase price.
Shipping From
Transformers shipping from stock deliver within 3-5 business. Maddox has 22 regional fulfillment centers so delivery is never a few days out!
Maddox Fulfillment Centers
Returns
Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
To return an item fill out this form.
To be eligible for a return, your item must be unused and in the s...
Read more here: Shipping, Return and Refund Policy
5 Year Warranty
Buy with confidence. All new and used Maddox transformers are tested and come with a full 5 year warranty against defects. If you experience any problems just give us a call and receive a replacement, free of charge. We'll even pay the shipping!
